A267402 Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north, west or northwest neighbors modulo n and the upper left element equal to 0.

1, 35, 18, 38, 71, 132, 222, 368, 568, 866, 1254, 1799, 2483

Offset

1,2

Comments

Superdiagonal 2 of A267401.

Links

Table of n, a(n) for n=1..13.

Example

Some solutions for n=4
..0..1..2..2..3..3....0..1..2..2..2..3....0..1..2..3..3..3....0..1..2..2..3..0
..0..1..2..3..3..0....0..1..2..3..3..3....1..1..2..3..0..0....1..1..2..3..3..0
..1..1..2..3..0..0....1..1..2..3..0..0....1..2..2..3..0..0....1..2..2..3..0..0
..1..2..2..3..0..1....1..1..2..3..0..0....1..2..2..3..0..1....1..2..3..3..0..1

Crossrefs

Cf. A267401.

Sequence in context: A348893 A088830 A033355 * A217408 A266057 A267341

Adjacent sequences: A267399 A267400 A267401 * A267403 A267404 A267405

Keyword

nonn

Author

R. H. Hardin, Jan 13 2016

Status

approved